#!/usr/bin/env python3

# Licensed to Crate.io GmbH ("Crate") under one or more contributor
# license agreements.  See the NOTICE file distributed with this work for
# additional information regarding copyright ownership.  Crate licenses
# this file to you under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.  You may
# obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations
# under the License.
#
# However, if you have executed another commercial license agreement
# with Crate these terms will supersede the license and you may use the
# software solely pursuant to the terms of the relevant commercial agreement.


import socket
import os
import signal
import subprocess


def is_up(host: str, port: int) -> bool:
    try:
        conn = socket.create_connection((host, port))
        conn.close()
        return True
    except (socket.gaierror, ConnectionRefusedError):
        return False


def kill():
    if not is_up('localhost', 4200):
        return

    output = subprocess.check_output(['jps'], universal_newlines=True)
    for line in output.split('\n'):
        try:
            pid, procname = line.split(' ')
        except ValueError:
            continue
        if procname == 'CrateDB':
            print(f'CrateDB process with pid {pid} found. Killing it')
            os.kill(int(pid), signal.SIGKILL)


if __name__ == "__main__":
    kill()
